Oven.



L. VOLLIVIEII.

OVEN.

APPLICATION FILED MAR. 2.9, 1915.

Patented Jan. 18, 1916.

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L. VOLLMER.

OVEN.

APPLICATION FILED MAR. 29| 1915. 1,168,769, Patented Jan. 18, 1916.

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LEONHARD VOLLMER, OF NE'W YORK, ll.

OVEN.

Application filed March 29, 1915.

To all fro/7mm it may concern Be it known that l, LEONHARD Vonne/inn, a

subject or" the German Emperor, residing ai New York, in the county of New York and State of New York, have invented certain neuT and useful Improvements in Grens, ci which the following is a speciiication.

rl his invention relates to improvements in portable ovens and has for its object to pro-v vide a structure so constructed that it can be quickly and conveniently assembled orV knocked down to be suitable for transportapartment or the top of the lower comparttion and repairing.

Another object of my invention is to provide an oven with two or more superposed baking compartments, which are in communication With one another through tlues or passages provided in the side Walls, such that only the lovvermost compartments need be directly heated by fire, While the other compartment or compartments receive the heat from said lovvermost chamber, which is uniformly distributed throughout the ditterent compartments through said fines;

lli/ith these objects in view, my new oven consists in the combination and arrangement of parts, as will be hereinafter specified.

ln the accompanying drawings, in which similar reference characters denote corre spending parts, Figure l is a side vieiv of the new oven; `Fig. 2 is a section on line 2 2 oi Fig. l; Fig. 3 is a section on line 3*-3 of Fig. 2; Fig. et is a vertical section on line i-i ot Fig. 3 and Fig. 5 is a sec tional detail.

The oven comprises a metal trame a composed ot angle irons o and metal plates a2 riveted to the different angle irons and being Jiastened together by screw bolts a3 (Fig. 5), tobe capable ot being easily and quickly taken apart and the Walls of which are on their inside linedivith asbestos sheets b or other heat retainingv material. rlhe interiorl of the oven is divided horizontally into two or more separate compartments l, lLof which tivo are shoivn in the present-example. The baking compartments are termed by individual stones or bricks of iireprooi material, which are so arranged that they can be readily assembled and disassembled. rlhe stones or bricks CZ forming the bottom of the lower compartment rest on the bottom at ot the metal frame, and are so admeasured that they do not extend throughout the entirev Specification of Letters Patent.

Patented Jan. i8, 119316.

serial No. 17,627.

or bricks e for the vside Walls. The ends of ach, of the bottom stones may be undercut, as at CZ', to form tight joints with the similarly undercut -lovver ends e of the bricks or stones e of the side Walls.

The height oi the stones or bricks e of the side Walls is substantially equal to the height ot' a compartment, and the side Walls of each compartment arev composed of individual stones, making it possible to assemble and disassemble the walls oi each compartment separately. The bottom oi the upper comment is composed ot individual stones or bricks 7" m iorm and size substantially identical With those ot the stones CZ. These stones j rest with their ends on the undercut upper ends e2 oi' the bricks or stones e. lin a similar manner, the top of the upper compartment is formed by individual bricks or stones g resting on the undercutportions e3 of the upper ends of the bricks e ot the upper compartments. To provide a suitable reinforcement for the. bottoms or tops ot' the upper compartment LT-shaped bars if are provided which are arranged to entend across the compartments resting on the bricks of the side Walls thereof.

The crevices between the adjoining sur- .t'aces of the bricks of the different. Walls and bottoms, as at y', may be closed by suitable ireprooi' material, such as cement or the like. rlfhe back Walls of the compartments are also formed by individual bricks which have cut out parts 7c to form openings or passages through which the compartments may communicate With the flue Z formed in the metal :trame and serving as or leading into a chimney. y

The different compartments are adapted to be constantlv in communication with one another. To this end l form the bricks c of the side Walls, each with `vertical passages et. The bricks ot the upper compartment are arranged to rest on those of the lower compartment so that their passages e' of which those of the lower compartment are open on top and those of the upper are open at the bottom are in extension of one another. The passages of all the bricks are also open on their inner faces, as at c7, so that there will be a direct communication between the different compartments when the bricks are assembled. To enable the cleaning oi the passages in a quick and easy manner, those of the lower bricks from the inner facestaper upwardly and those of the upper bricks taper downwardly, as at c5, e`

. respectively. wing to this construction,

the cleaning can be easily effected by a brush.

Doors m suspended from the metal frame lead into the dierent superposed compartments. The top of the last compartment is closed by a sheet n or sheets of reproo material, such as asbestos, and a metal lid o, which is fastened to the metal casings" by screws 79.

In use, a wood fire is built in the lower- "most compartment and after the bottom replaced bv a new one without requiring the Y taking apart of the entire oven.

My new oven is especially adapted to be used in camps. lrlfhe constructionmay be modiiied without, however, deviating from the spirit of my invention.

What I claim and desire to secure by Let` ters Patent is: l

l. ln va portable oven, the combination with a separable metal casing divided into superposed baking compartments, of individual stones yor bricks composing the top, bottcmand walls of each compartment, the stones of the side walls each being hollow and having an opening on the inner face communicating with one end of the hollow and an opening in one of the longitudinal edges communicating with lthe opposite end of the hollow, the stones of one of the compartments being adapted to rest onthe stones v yof the other compartment so that the openings intheir longitudinal edges coincide with one another and the hollows in the superposed stones constitute passa ges through which the heat of one compartment is transmitted to the other. v

2. In a portablev oven, the 'combination with la separableY metal casing divided into superposed baking compartments,y of individual stones or bricks composing the top,

bottom and walls of each compartment, the

vstones of the side walls each being hollow and having a tapered opening on the inner face communicating with one end of the hollow and an opening in oney of the longitudinal edges communicating with the opposite end of the hollow, the stones of one of the compartments being adapted to rest on the stones of the other compartment so that the openings in their longitudinal edges coincide with one another andthe hollows in the supperposed stones constitute passages through which the heat of one compartment is transmitted tothe other.

3. ln a portable oven, the combination with a separable metal casing divided into superposed baking compartments, of individual stones or bricks composing the top, bottom and walls of each compartment, the stones of the side walls each being hollow, andthe hollows in the superposed stones or bricks forming vertical passages through which the heat is transmitted from one compartment into the other, the stones composing the top and bottom ot each compartment being shorter in width than the width of the compartment, leaving freey spaces between their ends and the sides of the casing for the accommodation of the stones of the side walls.

4t. ln an oven, the combination with a separable metal casing, divided into superposed baking compartments, of a lining of heat retaining` material on the inside of said casing and individual stones composing the top, bottom and walls of each compartment, the stones or bricks ofthe bottom and top of each compartment being shorter in width than that of the respective compartments, leavingtree spaces between their ends and the sides or" the casing for the accommodation or" the stones ofthe saidy side walls, the stones of the side walls being" hollow and the hollows in the superposed stones forming passages connecting theditferent compartments, and a common Hue at the rear of the casing, the stones or bricks forming the rear wall of each compartment,

Copies of this patent may be Lobtained for five cents each, by addressing the Commissioner of Patents,

` Washington, D. C. 

